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annotate packages/redboot/current/src/net/ping.c @ 156:b939e9cada46

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Merge from eCos master repository on 2001-03-29-21:44:39-BST
author jlarmour
date Fri, 06 Apr 2001 17:20:13 +0000
parents e2d866e32dac
children f2545e5de153
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1 //==========================================================================
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2 //
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3 // ping.c
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4 //
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5 // Network utility - ping
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000, 2001 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): gthomas
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35 // Contributors: gthomas
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36 // Date: 2001-01-22
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37 // Purpose:
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38 // Description:
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39 //
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40 // This code is part of RedBoot (tm).
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41 //
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42 //####DESCRIPTIONEND####
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43 //
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44 //==========================================================================
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45
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46 #include <redboot.h>
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47 #include <net/net.h>
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48
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49 #ifndef CYGPKG_REDBOOT_NETWORKING
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50 #error CYGPKG_REDBOOT_NETWORKING required!
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51 #else
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52
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53 static void do_ping(int argc, char *argv[]);
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54 RedBoot_cmd("ping",
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55 "Network connectivity test",
154
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56 "[-v] [-n <count>] [-l <length>] [-t <timeout>] [-r <rate>]\n"
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57 " [-i <IP_addr>] -h <IP_addr>",
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58 do_ping
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59 );
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60
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61 static bool icmp_received;
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62 static icmp_header_t hold_hdr;
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63
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64 static void
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65 handle_icmp(pktbuf_t *pkt, ip_route_t *src_route)
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66 {
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67 icmp_header_t *icmp;
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68
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69 icmp = pkt->icmp_hdr;
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70 memcpy(&hold_hdr, icmp, sizeof(*icmp));
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71 icmp_received = true;
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72 }
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73
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74 static void
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75 do_ping(int argc, char *argv[])
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76 {
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77 struct option_info opts[7];
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78 long count, timeout, length, rate, start_time, end_time, timer, received, tries;
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79 char *local_ip_addr, *host_ip_addr;
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80 bool local_ip_addr_set, host_ip_addr_set, count_set,
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81 timeout_set, length_set, rate_set, verbose;
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82 struct sockaddr_in local_addr, host_addr;
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83 ip_addr_t hold_addr;
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84 icmp_header_t *icmp;
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85 pktbuf_t *pkt;
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86 ip_header_t *ip;
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87 unsigned short cksum;
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88 ip_route_t dest_ip;
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89
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90 init_opts(&opts[0], 'n', true, OPTION_ARG_TYPE_NUM,
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91 (void **)&count, (bool *)&count_set, "<count> - number of packets to test");
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92 init_opts(&opts[1], 't', true, OPTION_ARG_TYPE_NUM,
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93 (void **)&timeout, (bool *)&timeout_set, "<timeout> - max #ms per packet [rount trip]");
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94 init_opts(&opts[2], 'i', true, OPTION_ARG_TYPE_STR,
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95 (void **)&local_ip_addr, (bool *)&local_ip_addr_set, "local IP address");
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96 init_opts(&opts[3], 'h', true, OPTION_ARG_TYPE_STR,
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97 (void **)&host_ip_addr, (bool *)&host_ip_addr_set, "host IP address");
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98 init_opts(&opts[4], 'l', true, OPTION_ARG_TYPE_NUM,
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99 (void **)&length, (bool *)&length_set, "<length> - size of payload");
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100 init_opts(&opts[5], 'v', false, OPTION_ARG_TYPE_FLG,
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101 (void **)&verbose, (bool *)0, "verbose operation");
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102 init_opts(&opts[6], 'r', true, OPTION_ARG_TYPE_NUM,
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103 (void **)&rate, (bool *)&rate_set, "<rate> - time between packets");
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104 if (!scan_opts(argc, argv, 1, opts, 7, (void **)0, 0, "")) {
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105 printf("PING - Invalid option specified\n");
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106 return;
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107 }
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108 // Set defaults; this has to be done _after_ the scan, since it will
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109 // have destroyed all values not explicitly set.
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110 if (local_ip_addr_set) {
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111 if (!inet_aton(local_ip_addr, (in_addr_t *)&local_addr)) {
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112 printf("PING - Invalid IP address: %s\n", local_ip_addr);
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113 return;
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114 }
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115 } else {
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116 memcpy((in_addr_t *)&local_addr, __local_ip_addr, sizeof(__local_ip_addr));
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117 }
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118 if (host_ip_addr_set) {
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119 if (!inet_aton(host_ip_addr, (in_addr_t *)&host_addr)) {
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120 printf("PING - Invalid IP address: %s\n", host_ip_addr);
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121 return;
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122 }
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123 if (__arp_lookup((ip_addr_t *)&host_addr.sin_addr, &dest_ip) < 0) {
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124 printf("PING: Can't find address of server '%s'\n", host_ip_addr);
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125 return;
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126 }
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127 } else {
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128 printf("PING - host IP address required\n");
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129 return;
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130 }
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131 #define DEFAULT_LENGTH 64
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132 #define DEFAULT_COUNT 10
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133 #define DEFAULT_TIMEOUT 1000
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134 #define DEFAULT_RATE 1000
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135 if (!rate_set) {
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136 rate = DEFAULT_RATE;
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137 }
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138 if (!length_set) {
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139 length = DEFAULT_LENGTH;
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140 }
154
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141 if ((length < 64) || (length > 1400)) {
156
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142 printf("Invalid length specified: %ld\n", length);
154
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143 return;
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144 }
150
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145 if (!count_set) {
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146 count = DEFAULT_COUNT;
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147 }
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148 if (!timeout_set) {
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149 timeout = DEFAULT_TIMEOUT;
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150 }
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151 // Note: two prints here because 'inet_ntoa' returns a static pointer
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152 printf("Network PING - from %s",
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153 inet_ntoa((in_addr_t *)&local_addr));
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154 printf(" to %s\n",
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155 inet_ntoa((in_addr_t *)&host_addr));
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156 received = 0;
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157 __icmp_install_listener(handle_icmp);
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158 for (tries = 0; tries < count; tries++) {
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159 // The network stack uses the global variable '__local_ip_addr'
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160 memcpy(hold_addr, __local_ip_addr, sizeof(hold_addr));
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161 memcpy(__local_ip_addr, &local_addr, sizeof(__local_ip_addr));
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162 // Build 'ping' request
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163 if ((pkt = __pktbuf_alloc(ETH_MAX_PKTLEN)) == NULL) {
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164 // Give up if no packets - something is wrong
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165 break;
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166 }
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167
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168 icmp = pkt->icmp_hdr;
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169 ip = pkt->ip_hdr;
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170 pkt->pkt_bytes = length + sizeof(icmp_header_t);
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171
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172 icmp->type = ICMP_TYPE_ECHOREQUEST;
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173 icmp->code = 0;
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174 icmp->checksum = 0;
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175 icmp->seqnum = htons(tries+1);
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176 cksum = __sum((word *)icmp, pkt->pkt_bytes, 0);
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177 icmp->checksum = htons(cksum);
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178
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179 memcpy(ip->source, (in_addr_t *)&local_addr, sizeof(ip_addr_t));
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180 memcpy(ip->destination, (in_addr_t *)&host_addr, sizeof(ip_addr_t));
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181 ip->protocol = IP_PROTO_ICMP;
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182 ip->length = htons(pkt->pkt_bytes);
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183
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184 __ip_send(pkt, IP_PROTO_ICMP, &dest_ip);
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185 __pktbuf_free(pkt);
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186
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187 start_time = MS_TICKS();
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188 timer = start_time + timeout;
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189 icmp_received = false;
151
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190 while (!icmp_received && (MS_TICKS_DELAY() < timer)) {
150
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191 __enet_poll();
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192 }
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193 end_time = MS_TICKS();
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194
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195 timer = MS_TICKS() + rate;
151
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196 while (MS_TICKS_DELAY() < timer) {
150
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197 __enet_poll();
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198 }
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199
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200 // Clean up
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201 memcpy(__local_ip_addr, &hold_addr, sizeof(__local_ip_addr));
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202
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203 if (icmp_received) {
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204 received++;
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205 if (verbose) {
151
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206 printf("icmp - seq: %ld, time: %ld (ticks)\n",
150
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207 ntohs(hold_hdr.seqnum), end_time-start_time);
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208 }
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209 }
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210 }
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211 __icmp_remove_listener();
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212 // Report
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213 printf("PING - received %ld of %ld expected\n", received, count);
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214 }
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215
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216 #endif //CYGPKG_REDBOOT_NETWORKING